How has the amount of sleep we have varied throughout history and across different cultures?

Knowledge questions

If you are giving a TOK presentation, generate your own knowledge question. Here are some examples of knowledge questions that arise from the real life example.

To what extent is our knowledge in science the product of nature or culture and how would we know the difference?

In natural science and one other area of knowledge, what makes a knowledge claim justified?

In order to claim that we know something in natural science, what factors should we take into account and why?

In your analysis you could evaluate the counter argument and look critically at the evidence from science and history here which suggests that an 8-hour period of sleep is a product of culture: http://www.bbc.co.uk/news/magazine-16964783

Unit 4 of ‘Decoding TOK: Themes, Skills and Assessment’ focuses on TOK presentations with an emphasis on developing a knowledge question and analysis of knowledge questions.